A5054319724- Bee Products Chemical Analysis
- Phytochemicals and Antioxidant Activities
- Essential Oils and Antimicrobial Activity
- Insect and Pesticide Research
- Natural product bioactivities and synthesis
- Plant biochemistry and biosynthesis
- Nanocomposite Films for Food Packaging
- Pesticide Residue Analysis and Safety
- Plant and animal studies
- Phytochemistry and Biological Activities
- Analytical Chemistry and Chromatography
- Analytical chemistry methods development
- Microencapsulation and Drying Processes
- Traditional and Medicinal Uses of Annonaceae
- Botanical Research and Applications
- Anesthesia and Pain Management
- Air Quality and Health Impacts
- Pharmacological Effects and Assays
- Advanced Cellulose Research Studies
- Plant Genetic and Mutation Studies
- Plant Toxicity and Pharmacological Properties
- Chalcogenide Semiconductor Thin Films
- Yeasts and Rust Fungi Studies
- Heavy metals in environment
- Allelopathy and phytotoxic interactions
Pontificia Universidad Católica de Chile
2016-2025
Universidad Católica del Norte
2022
Institute of Inorganic Chemistry of the Slovak Academy of Sciences
2021
University of Chile
2007-2011
Extracts rich in bioactive compounds added to edible films have allowed the development of active packaging that increases shelf life food. However, it is necessary search for solvents are nontoxic and not harmful environment, with natural deep eutectic (NADES) being an attractive easily synthesized alternative. This research aimed design NADES by lyophilization be used extraction anthocyanins from Chilean Luma chequen (Molina) A. Gray berry, subsequently adding them matrix ƙ-carrageenan...
This study aimed to characterize the metabolomic profile of monofloral honey from Eucryphia cordifolia (ulmo) and evaluate potential transfer bioactive compounds plant parts, including leaves flowers, honey. Using UHPLC/Q-TOF-MS analysis, various flavonoids phenolic acids were identified quantified in extracts leaves, E. cordifolia. Given their rich polyphenolic composition, included this assess contribution antioxidant properties chemical markers ulmo Additionally, samples quantified....
Harvested bee pollen is valuable for its nutritional value and healthy properties. This work relates the botanical origin of sixteen pollens from Chile with their phenolic, protein carotenoid content, antioxidant/antibacterial activities. Our results showed that chemical properties different are associated plant’ species which each one was derived from. Some correlations between were observed. Bee 20.0- 30.4% protein, 2.8-50.2 mg/kg carotenoids, 22.8-918.4 phenolics, 4.51-91.19 mmol Fe+2/kg...
ABSTRACT Neonicotinoids are a relatively new generation of insecticides that have been used for control pests such as aphids, leafhoppers and whiteflies. This paper presents the first time determination residues four neonicotinoid (acetamiprid, thiamethoxam, thiacloprid imidacloprid) in Chilean honey using QuEChERS extraction UHPLC-MS/MS analysis. The limits detection quantification found all analytes ranging from 0.34 to 1.43 μg kg-1 0.30 4.76 kg-1, respectively. method provided recoveries...
Monofloral Ulmo honey is a very appreciated product in the international market but more information needed order to support their health properties. Total phenolic and flavonoid contents, antioxidant capacity antibacterial activity of monofloral (Eucryphia cordifolia) samples were determined. The contained between 176 208 mg gallic acid eq (GAE)/100 g for total content (TPC) 43–90 Quercetin eq/100 (TFC). ranged 91 152 mM Trolox/g 28–49 DPPH ABTS assays, respectively. All extracts from...
Plant biochemistry studies have increased in recent years due to their potential improve human health. Argylia radiata is an extremophile plant with interesting polyphenolic profile. However, its biomass scarce and occasionally available. vitro was obtained from tissue culture compared vivo roots regarding flavonoid content. Different solvents were used prepare extracts the of callus aerial organs roots. UPLC-MS/MS assess chemical composition each extract. ORAC-FL scavenging free radicals...
Abstract Propolis has been proposed as a polyphenolic‐rich natural product potentially able to be used for human consumption or even medicinal proposes. To guarantee minimum phenolic and flavonoid content consequence of their related‐biological activities, international requirements propolis quality are commonly applied. In this work we assessed contents ; the antioxidant capacity (toward peroxyl radicals hypochlorous acid); ability generate nitric oxide (NO); and, finally antimicrobial...
Nonsteroidal anti-inflammatory drugs are widely used by humans as therapeutic agents to treat or prevent illnesses. Once ingested, part of them is excreted and enters the wastewater treatment plants generating biosolids that they may be fertilizing complements.
The present study investigated the antioxidant potential and ability to inhibit lipid protein oxidation in bovine meat of four native Chilean species: canelo (Drimys winteri), nalca (Gunnera tinctoria), tiaca (Caldcluvia paniculata), ulmo (Eucryphia cordifolia). Phenolic acids (gallic, chlorogenic, caffeic, coumaric) flavonoids (catechin, epicatechin, rutin) were identified quantified by HPLC-MS/MS. Drimys winteri extract exhibited highest capacity evaluated oxygen radical absorption...
Abstract Intra-amniotic infection with Candida species is an uncommon but severe condition high fetal morbimortality and no established clinical guidelines for its management. We report a albicans intra-amniotic diagnosed in 25-week pregnant woman, successfully treated high-dose liposomal amphotericin B. Pregnancy was prolonged until 30 weeks, despite persistently positive cultures amniotic fluid, healthy newborn delivered without evidence of systemic infection. Amphotericin concentration...
SERS substrates with silver nanosheets (AgNS) on a copper surface were synthesized. A quantitative analysis of the pesticide imidacloprid was then performed by applying PLSR chemometric model.
The microencapsulation of bioactive extracts Chilean papaya waste, including both seeds and skin, was investigated. Papaya waste extract microcapsules utilizing maltodextrin at 10% (MD10), 20% (MD20), 30% (MD30) (w/v) as the wall material through freeze-drying process were obtained, subsequently their physicochemical, antioxidant, antimicrobial properties evaluated. TPC efficiency yield values achieved more than 60% for microencapsulated seed skin extracts, respectively. best results...
Chilean beekeeping is characterized by a variety of honey types, some unique due to high participation native plant species where nectar collected bees. For the first time flavonoids, phenolic compounds, and antioxidant capacity in honeys Azara integrifolia petiolaris, commonly known as corcolén honeys, have been determined. The results showed content total phenol (between 48.79 153.30 mg GAE/100 g honey), while flavonoid ranged between 8.80 12.33 QE/100 honey. ORAC-FL assay values varied...
It is known that polyphenolic extracts have antibacterial activity, but usually with not very broad spectrum of action. To enhance its individual effect, to combine different has been proposed. In this work, the combined effect 3 and their mixtures (Ulmo Quillay honeys, multifloral pollen) was evaluated. Their polyphenol content quantified by HPLC-DAD analysis. E. coli, S. aureus, Salmonella spp, Pseudomonas L. acidophilus, B. thermosphacta were used as foodborne pathogenic-spoilage strains...